DefensePro User Guide
Managing Services for Traffic Filtering
230
Document ID: RDWR-DP-V0602_UG1201
You can choose from the following types of configurable content:
•
URL
•
Hostname
•
HTTP header field
•
Cookie
•
mail domain
•
Mail to
•
Mail from
•
Mail subject
•
File type
•
Regular expression
•
Text
When the content type is URL, for example, the module assumes the session to be HTTP with a GET,
HEAD, or POST method. The module searches the URL following the GET/HEAD/POST to find a
match for the configured text. In this case, the configured offset is meaningless, since the GET/
HEAD/POST is in a fixed location in the HTTP header. If the content type is text, the module searches
the entire packet for the content text, starting at the configured offset.
By allowing a filter to take actual content of a packet/session into account, the module can recognize
and classify a wider array of packets and sessions.
Like OMPCs, Content Rules are not mandatory to configure. However, when a Content Rule exists in
the filter, the packet needs to match the configured protocol (and ports), the OMPC (if one exists)
and the Content Rule.
Predefined Basic Filters
The BWM module supports an extensive list of predefined basic filters.
The ACL and BWM modules support an extensive list of predefined basic filters. You cannot modify or
delete predefined basic filters. For the list of predefined basic filters, see
.
Configuring Basic Filters
Caution:
If you modify the configuration of a filter that is used in an existing and enabled policy,
you need to activate the latest changes (Classes > Update Policies > Set).
To configure a basic filter
1. Select Classes > Modify Services > Basic Filters. The Modify Basic Filter Table pane is
displayed. The Modify Basic Filter Table pane contains a table with the following columns:
—
Name
—
Description
—
Protocol
—
OMPC Offset
—
OMPC Mask
2. Select the relevant link. The Modify Basic Filter Table Update pane is displayed.
3. Configure the parameters; and then, click Set.
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